Comparison of knot strength of PE line

Among fishing lines, polyethylene (PE) line (braided) has become increasingly popular. A Japanese company recently conducted tests on the strength of various PE line knots and published the results. For more information, please visit Fuzzy Co., Ltd. (Fuzzy Co., Ltd.). Excerpts from the test are provided below.

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However, this test was conducted under test conditions set by the purifier using the PE line and leader selected by the purifier using the tester of their choice. Therefore, if the type of PE line, the type of tester, and the test conditions change, different results may be obtained. Therefore, it is recommended to use it only as reference material.

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With the spread of PE lines, various knotting techniques have emerged. To answer the question, “Which knot is the strongest?”, knot strength was tested. The results revealed that there was a difference of more than twofold from the PR knot, which has 100% strength, to the Uni knot, which has around 50% strength.

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It would be nice to always be able to use a 100% strength knot, but there are times when you have no choice but to use a different knot due to various reasons such as time constraints. Therefore, I think it is best to use it appropriately depending on the target fish species, fishing method, and situation.

The test results are as follows; please refer to the individual reports for further details.

※ Mashijime: This is written as 増し締め (mashijime) in Japanese, and the dictionary definition of this word is to tighten bolts and nuts that have already been fastened. However, it is not in the dictionary and there is no suitable expression, so it is written as is.

※ Knot strength

This refers to the tensile breaking strength measured when the same fiber or thread is bound together. Generally, the strength in a knot is weaker than the strength in an un-knotted state. This indicates that the bended state is weaker than the straight state. (Source: Naver)